Bulletin d’avalanche

Togwotee Pass

Bridger-Teton Avalanche Center
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Danger d’avalanche

Tue
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
Sans niveau
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Périmé — ce bulletin a expiré 5 months ago. Vous consultez des conditions passées, pas le bulletin en cours.

Points saillants

Watch for heightened avalanche conditions on steep, previously wind-loaded terrain above 9,500’ on north through east aspects. Stubborn wind slabs could be triggered where the snow has remained cold and dry. Monitor warming temperatures for wet loose avalanches on slopes facing the sun. If you encounter mushy and unsupportable snow, move to more sheltered terrain.

We will issue our last daily Avalanche Forecast of the season in this zone on Friday, April 10th. We will issue General Avalanche Information Bulletins as needed through April or early May. 

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2

    Triggering soft slab avalanches 1-3 feet deep on steep terrain will remain possible. These slabs may be more stubborn today and produce less obvious signs of instability such as shooting cracks.These avalanches were failing on wind-loaded upper elevation terrain with a poor bonding interface. Due to this interface, avalanches are capable of breaking wide cross-slope. Cold, dry snow still exists on shaded, northerly aspects where this problem is more likely. On these slopes, assess the stability of recent snow before committing to consequential terrain.  

    Check out the avalanches triggered two days to understand where this problem could exist.

    (4/3/2026)

    A human-triggered wind slab on Two Ocean Mountain near Togwotee Pass. about a foot deep. 

    North facing at 10,000'

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–1.5

    Temperatures barely dropped below freezing or remained above freezing last night. Monitor the weather and upper snowpack as the snow warms and destabilizes throughout the day on W-S-E aspects. Remember that these avalanches can start small and entrain large amounts of snow on steep, sustained slopes. They are also more likely around rock features that heat surrounding snow surfaces. Expect larger wet loose avalanches possible in the upper elevations. 

    (4/5/2026)

    Natural wet loose D1 avalanches that released yesterday afternoon on south facing slopes surrounded by rock features and sheltered from the wind.  (Lookers left on photo)

    Photo: Bridger-Teton Avalanche Center

Avalanche Discussion

A Transitional Snowpack

Temperatures dropped below freezing for at least a couple hours at all weather stations last night. A crust developed last night on slopes that were impacted by the sun yesterday. Monitor how quickly this crust breaks down today and begins to destabilize the snow. High cloud cover should help mitigate the snow from warming drastically. The mountains began to shed wet loose avalanches yesterday. There are still plenty of steep slopes where more wet loose avalanches could occur today. 

Two days ago, numerous avalanches were triggered on wind loaded terrain. These wind slabs failed on mid-storm density breaks such as graupel or deeper on the Dust Crust formed during the dry period at the end of March. This productive crust bed surface enabled avalanches to propagate far cross-slope. Warm temperatures the last two days with cold temperatures at night have helped settle and decrease the likelihood of triggering. We still aren’t out of the weeds quite yet. Assess the snowpack thoroughly by performing quick hand shear tests throughout your travels if you encounter stiffened snow surfaces, drifts, or terrain frequently wind-loaded.

As five-scale avalanche forecasts wind down this week, we will continue to remain operational by providing General Avalanche Information Bulletins twice a week through spring depending on conditions and weather. We will also update the 24 Hour Data Summary (Big Sheet) until June 1st.

Régions couvertes